You do not need to be exalted with the Argent Crusade to access these dailies.

Edit: Correction on the availability of the quests.

Comment by Paleona

For anyone looking for transmog info on his gear- unfortunately, his exact polearm is not available to players, but it is a re-coloring of Terokk's Quill. The rest of his gear is a mix of cloth and leather. I could not find a chest that matched.